Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided in four parts:
  1. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provide some useful information on the computer.
  2. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser !
  3. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to 1200 seconds. After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  4. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.

General information on the benchmark

Namemps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-bm23.opb
MD5SUM9e4c4999c6f95fcef879d3d86840d71a
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 34
Optimality of the best value was proved YES
Number of terms in the objective function 27
Biggest coefficient in the objective function 9
Number of bits for the biggest coefficient in the objective function 4
Sum of the numbers in the objective function 124
Number of bits of the sum of numbers in the objective function 7
Biggest number in a constraint 65
Number of bits of the biggest number in a constraint 7
Biggest sum of numbers in a constraint 182
Number of bits of the biggest sum of numbers8
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark0.288955
Number of variables27
Total number of constraints47
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)27
Number of constraints which are nor clauses,nor cardinality constraints20
Minimum length of a constraint1
Maximum length of a constraint26

Trace number 514

Launcher Data

LAUNCH ON wulflinc9 THE 2005-09-18 11:02:56 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=504 boxname=wulflinc9 idbench=504 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  9e4c4999c6f95fcef879d3d86840d71a  /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-bm23.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-bm23.opb
IDLAUNCH: 504
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        949476 kB
Buffers:         33488 kB
Cached:          25920 kB
SwapCached:       1044 kB
Active:          53208 kB
Inactive:         8888 kB
HighTotal:      131008 kB
HighFree:       101584 kB
LowTotal:       903652 kB
LowFree:        847892 kB
SwapTotal:     2097136 kB
SwapFree:      2095568 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5656 kB
Slab:            17368 kB
Committed_AS:    64132 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 11:04:15 (client local time) WITH STATUS 30 IN 67.1788 SECONDS
stats: 504 0 67.1788 30

Solver Data

c INFO: OSL Context initialized.
c Initial problem consists of 27 variables and 20 constraints.
c No problem reductions applied in OPT. instance.
c	preprocess terminated. Elapsed time: 0.056
c After prepocess the problem consists of 27 variables and 20 constraints.
c Initial Lower Bound: 0
c Restart #1 #Var: 27 #Dec: 252 LB: 0 @ 0.132
c Restart #2 #Var: 27 #Dec: 721 LB: 0 @ 0.304
c NEW SOLUTION FOUND: 61 @ 0.386 @ #Dec. 932
c NEW SOLUTION FOUND: 58 @ 0.501 @ #Dec. 1256
c Restart #3 #Var: 27 #Dec: 1895 LB: 0 @ 0.795
c Restart #4 #Var: 27 #Dec: 2744 LB: 0 @ 1.354
c Restart #5 #Var: 27 #Dec: 3794 LB: 0 @ 2.074
c Restart #6 #Var: 27 #Dec: 5133 LB: 0 @ 3.139
c CHANGE to LPR mode... 	UB: 58	MIS: 0	LPR: 19 (0.018)	Diff: 0
c Restart #0 #Var: 27 #Dec: 6574 LB: 0 @ 4.309
c Restart #1 #Var: 27 #Dec: 6787 LB: 19 @ 6.43
c Restart #2 #Var: 27 #Dec: 7199 LB: 19 @ 11.809
c NEW SOLUTION FOUND: 51 @ 12.045 @ #Dec. 7219
c NEW SOLUTION FOUND: 47 @ 14.263 @ #Dec. 7373
c NEW SOLUTION FOUND: 46 @ 19.024 @ #Dec. 7742
c NEW SOLUTION FOUND: 38 @ 20.051 @ #Dec. 7831
c Restart #3 #Var: 27 #Dec: 8433 LB: 19 @ 29.54
c Restart #4 #Var: 27 #Dec: 9250 LB: 19 @ 43.941
c Restart #5 #Var: 27 #Dec: 10264 LB: 19 @ 58.583
c NEW SOLUTION FOUND: 35 @ 62.991 @ #Dec. 10552
c NEW SOLUTION FOUND: 34 @ 64.349 @ #Dec. 10655
s OPTIMUM FOUND
v -C101_bit0 -C102_bit0 C103_bit0 -C104_bit0 C105_bit0 -C106_bit0 -C107_bit0 -C108_bit0 C109_bit0 -C110_bit0 -C111_bit0 -C112_bit0 -C113_bit0 -C114_bit0 C115_bit0 -C116_bit0 C117_bit0 -C118_bit0 -C119_bit0 C120_bit0 -C121_bit0 C122_bit0 -C123_bit0 -C124_bit0 -C125_bit0 -C126_bit0 C127_bit0 
c Cost: 34
c Exit Code: 30
c Total time: 67.164 s

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/32136/stat): 32136 (bsolo) R 32135 32136 30740 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1782515508 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/32136/statm): 107 3 90 68 0 39 0
[pid=32136] vsize: 428
open syscall for file /etc/ld.so.preload
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open syscall for file libosl.so
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libosl.so
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open syscall for file libstdc++-libc6.2-2.so.3
open syscall for file /oldhome/oroussel/lib/libstdc++-libc6.2-2.so.3
open syscall for file /etc/ld.so.cache
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open syscall for file /oldhome/oroussel/lib/libpthread.so.0
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open syscall for file /lib/tls/libc.so.6
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open syscall for file libgcc_s.so.1
open syscall for file /oldhome/oroussel/lib/libgcc_s.so.1
open syscall for file /lib/libgcc_s.so.1
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open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-bm23.opb

[startup+10.0029 s]
Raw data (loadavg): 0.93 0.97 0.91 2/56 32136
Raw data (/proc/32136/stat): 32136 (bsolo) R 32135 32136 30740 0 -1 0 3205 0 0 0 843 53 0 0 22 0 1 0 1782515508 11558912 2115 4294967295 134512640 134736556 3221224560 3221223084 134536372 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/32136/statm): 2822 2115 1116 68 0 2754 0
[pid=32136] vsize: 11288
Current children cumulated CPU time (s) 8.96
Current children cumulated vsize (Kb) 11288

[startup+20.0037 s]
Raw data (loadavg): 0.94 0.97 0.91 1/56 32136
Raw data (/proc/32136/stat): 32136 (bsolo) T 32135 32136 30740 0 -1 0 5399 0 0 0 1612 125 0 0 18 0 1 0 1782515508 12259328 2276 4294967295 134512640 134736556 3221224560 3221222692 1077782939 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/32136/statm): 2993 2276 1116 68 0 2925 0
[pid=32136] vsize: 11972
Current children cumulated CPU time (s) 17.37
Current children cumulated vsize (Kb) 11972

[startup+30.0045 s]
Raw data (loadavg): 0.95 0.97 0.91 2/56 32136
Raw data (/proc/32136/stat): 32136 (bsolo) R 32135 32136 30740 0 -1 0 7707 0 0 0 2358 198 0 0 20 0 1 0 1782515508 12853248 2434 4294967295 134512640 134736556 3221224560 3221222692 1077782939 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/32136/statm): 3138 2434 1116 68 0 3070 0
[pid=32136] vsize: 12552
Current children cumulated CPU time (s) 25.56
Current children cumulated vsize (Kb) 12552

[startup+40.0043 s]
Raw data (loadavg): 0.96 0.97 0.91 2/56 32136
Raw data (/proc/32136/stat): 32136 (bsolo) R 32135 32136 30740 0 -1 0 9614 0 0 0 3137 265 0 0 21 0 1 0 1782515508 13340672 2557 4294967295 134512640 134736556 3221224560 3221222308 1077374598 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/32136/statm): 3257 2557 1116 68 0 3189 0
[pid=32136] vsize: 13028
Current children cumulated CPU time (s) 34.02
Current children cumulated vsize (Kb) 13028

[startup+50.0061 s]
Raw data (loadavg): 0.96 0.97 0.91 2/56 32136
Raw data (/proc/32136/stat): 32136 (bsolo) R 32135 32136 30740 0 -1 0 11569 0 0 0 3909 333 0 0 18 0 1 0 1782515508 13844480 2679 4294967295 134512640 134736556 3221224560 3221223128 134554109 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/32136/statm): 3380 2679 1116 68 0 3312 0
[pid=32136] vsize: 13520
Current children cumulated CPU time (s) 42.42
Current children cumulated vsize (Kb) 13520

[startup+60.0058 s]
Raw data (loadavg): 0.97 0.97 0.91 1/56 32136
Raw data (/proc/32136/stat): 32136 (bsolo) T 32135 32136 30740 0 -1 0 13658 0 0 0 4675 400 0 0 20 0 1 0 1782515508 14471168 2818 4294967295 134512640 134736556 3221224560 3221222692 1077782939 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/32136/statm): 3533 2818 1116 68 0 3465 0
[pid=32136] vsize: 14132
Current children cumulated CPU time (s) 50.75
Current children cumulated vsize (Kb) 14132

[startup+70.0056 s]
Raw data (loadavg): 1.05 0.99 0.91 2/56 32136
Raw data (/proc/32136/stat): 32136 (bsolo) R 32135 32136 30740 0 -1 0 15856 0 0 0 5429 474 0 0 21 0 1 0 1782515508 15028224 2965 4294967295 134512640 134736556 3221224560 3221223200 134536465 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/32136/statm): 3669 2965 1116 68 0 3601 0
[pid=32136] vsize: 14676
Current children cumulated CPU time (s) 59.03
Current children cumulated vsize (Kb) 14676
One traced child (pid=32136) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 79.4163
CPU time (s): 67.1788
CPU user time (s): 61.8786
CPU system time (s): 5.30019
CPU usage (%): 84.5906
Max. virtual memory (cumulated for all children) (Kb): 14676

Verifier Data

Verifier:	OK	34